SMC Networks SMC6824M manual Spanning-tree mst cost, Auto

SPANNING TREE COMMANDS

Default Setting

auto

Command Mode

Interface Configuration (Ethernet, Port Channel)

Command Usage

•Specify a point-to-point link if the interface can only be connected to exactly one other bridge, or a shared link if it can be connected to two or more bridges.

•When automatic detection is selected, the switch derives the link type from the duplex mode. A full-duplex interface is considered a point-to-point link, while a half-duplex interface is assumed to be on a shared link.

•RSTP only works on point-to-point links between two bridges. If you designate a port as a shared link, RSTP is forbidden. Since MSTP is an extension of RSTP, this same restriction applies.

Example

Console(config)#interface ethernet 1/5

Console(config-if)#spanning-tree link-type point-to-point

spanning-tree mst cost

This command configures the path cost on a spanning instance in the Multiple Spanning Tree. Use the no form to restore the default.

Syntax

spanning-tree mst instance_id cost cost no spanning-tree mst instance_id cost

•instance_id - Instance identifier of the spanning tree.

•(Range: 0-4094, no leading zeroes)

•cost - Path cost for an interface. (Range: 1-200,000,000) The recommended range is -

-Ethernet: 200,000-20,000,000

-Fast Ethernet: 20,000-2,000,000

-Gigabit Ethernet: 2,000-200,000

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